FR3097228A1 - MUSICAL INSTRUMENT RECONFIGURATION PROCESS, AND ASSOCIATED STICKER - Google Patents

Abstract

The invention relates to a method for reconfiguring a musical instrument (1), comprising a step of applying a sticker (3) to at least one technical surface (2) of the musical instrument (1), characterized in that the application is made without glue, and in that the sticker (3) comprises an elastomer layer configured to come into contact with said technical surface (2) and to adhere to it in a reversible manner without application of glue. The invention further relates to a sticker (3) and an associated manufacturing process. Figure for the abstract: Fig. 6B

Description

Musical instrument reconfiguration process, and associated sticker

The present invention relates to the field of reconfiguration of musical instruments. In the context of this, reconfiguration is understood to include in particular decoration or personalization (customization) by means of themes, visual effects and textures; a visual aid to musical learning, for example by note names or symbols; or as the establishment of a communication and / or promotion medium.

More particularly, the invention relates to the application of one or more stickers (sticker) for the purpose of reconfiguring musical instruments.

The prior art suggests stickers, but their use in reconfiguring musical instruments is not entirely satisfactory.

Musical instruments generally have a plurality of technical surfaces. These are in particular surfaces whose vibration makes it possible to restore the sound of the instrument, delicate and fragile surfaces, and / or surfaces made of living-type material needing to "breathe", namely to be traversed by air, so as not to deteriorate quickly. Some technical surfaces have fragile coatings or varnish which complicates the use of stickers.

The use of stickers with glue poses a problem in that glue residue permanently clogs the pores of technical surfaces or deteriorates the coatings.

In addition, the use of commercial stickers alters the sound of the technical surface covered.

In addition, for some technical surfaces, it is important that the sticker covers the surface aesthetically, including in relief.

Furthermore, commercial stickers have several other drawbacks.

Some stickers have a stiff, preferably one-component polymer structure and with a rather dry and sticky viscoelasticity only on a very clean and smooth surface, which results in air bubbles in use. Many of them do not stick to a surface that is not completely clean, and fear heat and poor storage (in the face of the unlimited advantage over time of the invention) which generates irreversible wrinkles. The rigid side prevents application on circumvolutive surfaces (because it is deformable and not stretchable) and almost completely decreases adhesion on surfaces from a slightly dirty or dusty state.

In addition, some stickers have a micro-perforated adhesive structure or with micro-voids or multi-holes with a suction effect adhering by suction allowing adhesion on smooth to slightly less smooth substrates, but they are very sensitive to soiling and dust quickly sticking to it. Also, this feature reveals a finished surface that is not shiny and with a hammered effect that lacks the finished aesthetic of the product. In addition, this material is not stretchable and is sensitive to tearing. Finally, this same material leaves to the touch an unpleasant sticky feeling and strongly affects the absorption of fat and dust.

Other stickers have a multi-layered polypropylene film structure with micro-voids as in use, some do not hold but slide across the surface. Others do not accept matte and porous surfaces. The rigid side prevents application on circumvolutive surfaces (because product deformable in stretch and not stretchable base). The thinness of the product removes the possibilities of volume, 3-dimensional effect and textures. Also, when peeling for removal, the parts that are lifted first suffer from the lifting action. Between the force exerted during lifting, the adhesion of the sticker to the substrate and the fineness of the product, the deformability of the material of the sticker and unfortunately still present.

Other stickers have adhesion based on electrostatic or vitrostatic forces, and require water and masking to be applied, which is tedious. In addition, they are also deformable and non-stretchable, in particular by virtue of their rigidity and fineness. The lack of volumes has a direct impact on the impossibility of producing different volumes and textures on the surface.

A first objective of the present invention is to provide reconfiguration means canceling the permanent obstruction of the pores of the technical surfaces of musical instruments, and / or preserving the coatings.

A second objective is to propose reconfiguration means which alter the sounds of technical surfaces less, or reconfigure sounds in a specific way.

A third objective is to be able to aesthetically cover the reliefs of technical surfaces.

A fourth objective is to provide an unlimited reusable means.

To achieve these objectives, the invention provides a method of reconfiguring a musical instrument, comprising a step of applying a sticker to at least one technical surface of the musical instrument.

According to a first aspect, the application is made without glue, and the sticker comprises an elastomer layer configured to come into contact with said technical surface and to adhere to it in a reversible manner without application of glue.

Advantageously, the application of the sticker without glue makes it possible to limit the permanent obstruction of the pores of technical surfaces of musical instruments, and to preserve the coatings thereof.

In addition, the sticker can be applied reversibly, that is, it can be removed to clean the surface of the instrument or allow it to breathe.

In addition, the sticker is elastic enough to allow vibrations of technical surfaces so that the sounds are less altered, especially with the preservation of the varnish. In addition, it is possible to configure one or more specific stickers expressly modifying the sounds, in particular for more experienced musicians (developed ear).

It is for example a set of stickers (with possible design) on the body of the instrument, for the search for a different sound, for example more muffled, soft and round, with several variations of thickness. (0.5 to 2 mm thick, 2mm being the thickness to have the most muffled and round sound) and size to specify this game, also according to the dimension of the body or the bell of the instrument.

The viscoelasticity of the sticker allows it to be stretched to aesthetically match the reliefs and contours of the technical surface.

Preferably, the method includes a stretching step during placement of the sticker.

The stretchability and adhesion power allows the application of the sticker with ease and without air bubbles between the technical surface and itself.

Preferably, the invention has as a variation a minimum of 2 types of product format.

- a first offering a product type format a) in the form of an A5 / A4 / A3 sheet and others ..., free to create: cuttable and adaptive.

- a second product type format b) in the form of a ready-to-use sticker, previously styled.

Preferably, the method comprises a cutting step before or after the application of the sticker.

The invention further relates to a sticker for reconfiguring a musical instrument, characterized in that it comprises an elastomer layer configured to contact at least one technical surface of the musical instrument, and to adhere strongly thereto. reversible way without applying glue.

In particular, it is a sticker for a reconfiguration process according to the invention.

According to other aspects taken alone or combined in all technically feasible combinations:

- the elastomer layer comprises at least one elastomer chosen from silicone; an alginate; natural or synthetic rubber; natural or synthetic latex; neoprene; polyurethane; nitrile; EPDM; Butyl (Polyisobutylene); mastic, chlorosulfonated polyethylene; parablond; fluorocarbon rubber; and or

- the elastomer layer comprises RTV Polyaddition silicone; and or

- the sticker includes an association of several adjoining structures; and or

- the sticker includes a complex three-dimensional configuration, in particular by reliefs and / or associated textures.

The invention further relates to a process for manufacturing a sticker, comprising the steps of:

- prepare at least one elastomer composition;

- apply the composition to a sticker forming medium

wherein the application is by pressure and / or squeegee on at least one sticker mold surrounding said elastomeric composition.

Preferably, several structures are made using one or more elastomeric compositions, applied using one or more sticker molds.

The invention also relates to a use of a sticker according to the invention as a visual aid for musical learning.

The invention will be further detailed by the description of non-limiting embodiments, and on the basis of the appended figures illustrating preferred embodiments of the invention, in which:

Figure 1 illustrates wear deterioration on a technical surface of an instrument of the wind family (here the brass), the trombone;

FIG. 2A is a view in space of a board for making a sticker by a method according to a first embodiment (product type a), and applied to a guitar;

FIG. 2B is a plan view of a guitar having a sticker obtained by means of the board of FIG. 2A;

FIG. 3A is a plan view of a first mold for producing a first part of a sticker by a method according to your choice, a second or a third embodiment with, as an option of the third embodiment, a relief in background to be added (relief not present in the figure), (and this for formats and types of product a) or b)),

FIG. 3B is a plan view of a second mold for making a second part of a sticker in addition to the part of FIG. 3A;

FIG. 3C is a plan view of a sticker taken from the parts corresponding to FIGS. 3A and 3B in the third embodiment (presence of reliefs);

FIG. 3D is a view in close space of parts of stickers obtained by a method according to a third embodiment (central sticker and on the right), in comparison with a sticker obtained according to the second embodiment (on the left );

FIG. 4 is a plan view of a sticker made according to the first embodiment for another type of product (type of product b);

FIG. 5 is a plan view of another sticker made according to the first embodiment, obtained by means of another mold; under product type b).

FIGS. 6A and 6B are spatial views of further stickers made according to the first embodiment, on stringed instruments such as violins; and

FIG. 6C is a close-up view of a detail of the sticker of FIG. 6B;

FIGS. 7A to 7C are spatial views of other stickers made according to the first embodiment, on brass instruments, here trombones; under product type b).

FIGS. 8A and 8B are spatial views of other stickers made according to the first embodiment, on guitars; and

FIG. 8C is a close-up view of a detail of the sticker of FIG. 8B.

The invention relates to the reconfiguration of musical instruments 1. In the context of the present, it is in particular the decoration or personalization (customization) of musical instruments 1.

The personalization of musical instruments is not really practiced. The French and global musical universe offers no satisfactory customization / personalization to the user to unleash their creativity, enhance their instrument, define themselves, find their universe and motivate themselves through it.

The reconfiguration within the scope of the invention is done, for example, by means of themes, visual effects and textures; or as a communication and / or promotional medium. The promotion can for example be a promotion of a musical group or a brand, in particular the presentation of a logo, a name, a slogan, a price ...

The processes will be further detailed below.

The reconfiguration can also make it possible to use one or more stickers as a visual aid to musical learning, for example by note names or symbols.

The inscriptions can be made by printing (in particular by superposition) or inlay (in particular by molding).

Some stickers on the market are not suitable for musical instruments with 2 technical surfaces because they have glue.

By "technical surface" is meant in particular surfaces whose vibration makes it possible to restore the sound of the instrument, delicate and fragile surfaces, and / or surfaces made of a living material, such as wood (or metals). , needing to "breathe", namely to be traversed by air, so as not to deteriorate rapidly.

Indeed, the instruments need to be in good hygrometric and thermal condition to be stored. So the air must be healthy to best conserve the materials of the instruments. A sticker that is still applied or that has left glue will affect the non-passage of healthy air and will accelerate aging. Hence the advantage of the unlimited removal of the non-disposable silicone sticker. In addition, varnishes become more and more fragile and less resistant over time, they peel off easily and the removal of stickers with glue will automatically cause it to be removed.

As can be seen in Figure 1, we see the aggression by the touch of the musician but also of the air over time which caused the flaking of the varnish and the implementation of the defense of the material (here, wear 1a by oxidation, verdigris and peeling of the varnish). Some technical surfaces have fragile coatings or varnish or lacquer that complicates the use of stickers.

Musical instruments, being either rented or purchased, present an emotional and financial aspect to the musician. Products with glue are really not suitable for these conditions.

Indeed, the glue poses a problem in that glue residues permanently block the pores of technical surfaces 2 of musical instruments 1 or deteriorate the coatings thereof.

In addition, commercial stickers are appreciably rigid, which alters the sounds of the technical surface 2 covered.

In addition, certain technical surfaces 2 may have convolutions (curves and shapes), or positive or negative reliefs. It is important that the sticker covers surface 2 aesthetically, including in reliefs and on convolutions, avoiding folds.

Alternatively, a specific configuration of the sticker design also helps adhesion on the more complex, circumvolutive and large shapes. The strategy is to make void zones to aid in surface adhesion in contact, decreasing the tension in the silicone material as less solid material. This results in easier stretching. For example, an A4 size silicone moucharabieh will be more stretchable than an A4 sheet of (full) silicone of the same thickness.

More particularly, the invention proposes to apply new stickers 3 (sticker) for the purpose of reconfiguring musical instruments 1.

Thus, the invention relates to a process for reconfiguring a musical instrument 1, which may be those composing a symphonic or philharmonic orchestra such as a guitar, a piano (body and / or keys), a violin, a trumpet, etc.

The method preferably comprises a step of preparing the technical surface 2 to be reconfigured. This is in particular a cleaning of said surface 2 to remove dust residues, for example.

The method according to the invention comprises a step of applying one or more stickers 3 to at least one technical surface 2 of the musical instrument 1.

Instruments 1 are for some “alive and breathing”. Wood or metals need a specific varnish (nitrocellulose, polyurethane, polyester, etc.) or a protective lacquer that lets them "breathe" so that they do not age prematurely and also allow sound to be transmitted to perfection.

The role of varnish covers 3 aspects: resistance, aesthetics and sound.

It is preferred to provide a deformable and shape memory sticker 3. In the preferred variant, the sticker is both deformable and shape memory under all thermal conditions acceptable for the instrument, in particular from -20 ° to + 150 ° Ce probably even more normally. In addition, the sticker is very resistant to sudden changes in temperature.

It is also important that the sticker has good adhesion to avoid peeling, especially at the ends of the sticker.

Sticker 3 fulfills all these objectives and allows you to customize Instrument 1 without depositing or penetrating glue and solvent on the materials, and moreover, they do not distort the hearing.

Thus, according to the invention, the application of said sticker 3 is done without glue. Thus, the application of the sticker does not induce a sticky residue clogging the pores of technical surfaces 2 or damaging delicate technical surfaces 2. This results in better preservation of technical surfaces 2.

In addition, the sticker 3 comprises an elastomer layer configured to come into contact with said technical surface 2 and to adhere to it in a reversible manner without the application of glue.

Advantageously, said sticker can be applied reversibly, can be removed to clean the surface 2 of the instrument 1 or let it breathe. This can be illustrated by Figure 8A.

In addition, the sticker 3 has sufficient residual elasticity to allow vibrations of technical surfaces 2 so that the sounds are less altered while optimizing its hold when the sound is emitted.

Furthermore, said sticker can be stretched so as to make it aesthetically match the technical surface reliefs 2.

Thus, according to one variant, the method further comprises a stretching step during the placement of the sticker 3. This step makes it possible to match the positive or negative convolutions and reliefs of the technical surface 2. This can be illustrated. by Figure 6A to 7C.

Advantageously, the invention allows both stretching, unlimited repositioning, cleaning, change of design, 3d aspects (relief, textures, etc.) light-reflecting, phosphorescent effects, collages, overlays and stacking, a possibility of writing or drawing on it… and a product that is thicker and more qualitative to the touch and to wear.

Stretching may not be necessary, especially for substantially flat technical surfaces. For curved surfaces stretching may be necessary.

According to a variant, the method further comprises a cutting step preferably before the application of the sticker.

In this variant, a sticker greater than the technical surface 2 to be covered can be produced and applied. The excess sticker 3 can be cut off. Instrument 1 obtained has complete and aesthetic coverage. This aspect can be illustrated by FIG. 2B.

In particular, it is a cutting using a tool such as scissors or a cutter with reference to a felt-tip or marker / pencil tracing specifically designed so that the tracing is erasable using a kit. specific cleaning.

Tracing can be done against the instrument. The resistance of the silicone will not drive the tip of the pencil into the material of the instrument. The cutting of sticker 3 is preferably done outside the instrument.

Cutting can be done for large format boards. It is preferably not needed for already drawn and finished designs, such as the wolf's head (figure 5), or the eighth note (figure 4), or the Japanese landscape (figure 3C). These can be made in different sizes ready to use for all instruments. In general, we will talk about format and type of product b) for these stickers; and size and type of product a) for cut-out stickers such as those in Figures 2A and 2B.

The invention further relates to a sticker 3 for reconfiguring a musical instrument 1. This is in particular a sticker perfectly configured for implementation for a reconfiguration method as described above.

According to the invention, the sticker 3 comprises an elastomeric layer configured to contact at least one technical surface 2 of the musical instrument 1. The sticker 3 is preferably an elastomeric sticker. In addition, the elastomer layer is configured to adhere to the engineered surface 2 in a reversible manner without the application of glue.

More particularly, the elastomer layer does not include glue or any other substance liable to leave sticky residues after removal of the sticker 3. More particularly, the elastomer layer is not used with this type of sticker either. glue or substance.

Preferably, the sticker 3, in particular the elastomer layer, is configured to have an extremely smooth surface. The layer is for example the result of a specific molding sought to achieve this non-slip texture generating a high coefficient of friction that can hold vertically and even upside down (towards the ground).

The sticker depending on the preferred variant has good performance under standard outdoor climatic conditions (wind, rain, etc.), as well as on oily or dusty instruments.

In a preferred variant, the basic principle of the sticker 3 is to make it on at least one of its surfaces completely smooth, allowing it to adhere to any support of the same zero roughness, such as varnishes or lacquers on instruments 1. in wood, metals, plastics ...

The sticker 3 allows a perfect adhesion by following the shapes (by its elasticity) in particular by simple pressure of the sticker with the fingers on the receptive surface, leaves no trace of glue (because there is none), and leaves easy to glue and take off without resistance, always with the hands.

Sticker 3 does not damage the varnish of musical instruments 1 and other fragile surfaces 2 that can be decorated or applied with a sticker.

A collage is more effective with a clean sticker. It is washable with water for dust removal and with a cleaning solution for grease removal. Drying can be done in the open air or with a cloth (microfiber) that does not deposit any fiber to gain adhesion efficiency.

Alternatively, the structure of the sticker includes a glue-free elastomer with elasticity that limits air bubbles in use. The possible finesse of the finished product (less than half a millimeter) offers the visual, virtually no relief and a particular choice of aesthetics (ultra flat). The use of the instrument with the sticker is also facilitated by the non-relief and the exceptional adhesion to the substrate (varnish, lacquering, etc. of the instruments). This feature offers a very adhesive bonding on a clean surface, in particular through the very low weight of the sticker and the origin of the material having a viscoelasticity ratio targeted mainly on strong adhesion rather than elasticity. Repositioning remains unlimited if no deformation is applied. Cleaning with water is still possible. In addition, for a volumetric effect or with different textures, gluing on the product can be done in order to add volume in superposition. Preferably, this extra thickness function requires the added part to have the same elasticity as the lower part. If the presence of an adhesive (glue) is to be applied, it should be contained only on the surface bonding them. Thus the product will become a multilayer with volume and the basic advantages of this variant.

Moreover, unlike certain commercial stickers, the sticker according to another variant of the invention includes an elastomer chosen to allow adhesion without adhesive significantly on very clean surfaces, and being stable at temperatures of current use. . This second variant, by the design of multilayers of polymer films with vacuum, makes it possible to have a sticker that is positioned almost automatically by its approach on the substrate while being sucked into it. The non-stretchable and rather rigid side of the product brings the advantage of virtually no appearance of bubbles and the removal of these by simply passing the hand from the center of the sticker outwards.

Again thanks to its rigid hold, the application becomes easier to implement by applying it with hold and keeping the shape of the design on the entire sticker. Membership lasts as long as no peeling is done. The removal is done without force by simply peeling off one corner of the sticker with the tip of your fingernail. Repositioning remains unlimited if no deformation is applied. Cleaning with water is still possible.

Finally, the musician's playing is facilitated by the finesse of the product, which avoids any snagging during movement. In addition, for a volumetric effect or with different textures, a collage on the product can be done in order to add volume in superposition. This method requires the added part to have the same elasticity as the lower part. It should be contained only on the surface connecting them. Thus the product will become a multilayer with volume and the basic advantages of this variant.

In addition, unlike some commercially available stickers, the sticker of the invention includes an elastomer to help prevent slipping.

Another variant with a micro-perforated or multi-hole adhesive structure with a suction effect adhering by suction allows adhesion on smooth but also more difficult substrates such as: on slightly porous, rough, matt, little dusty, little greasy and used, matt varnishes, instruments frosted or without varnish. This material maintains thickness and can be molded to effect shapes and textures.

In addition, an additional element can also be added to it by gluing on its surface. The material accepts wet cleaning allowing the product to be remanufactured. The flexibility of the material offers application on circumvolutive surfaces. An ideal viscoelasticity ratio is to be put in place in order to maintain the main objective of the very sticky property of the sticker on so-called difficult surfaces, and the elasticity for application on technical circumvolutive surfaces. In addition, it also retains the property of not sticking with glue.

Alternatively, the elastomer layer comprises silicone.

The silicone sticker 3 is capable of being used for various solutions: It can be a medium for advertising, information ... because any pattern, text or design can be printed on it or molded and linked together.

Alternatively, the elastomer layer comprises RTV Polyaddition silicone. A silicone having the following properties is suitable for carrying out the invention and implements all the advantages listed in this application.

DOSAGE: mixture of base and catalyst of approximately 50% base and 50% catalyst.

Hardness (shore A): about 33 shA

Curing at 23 ° C: about 2h30 - 3 hours

Demoulding: 3h30

Coloring: Special silicone dye, preferably soluble in silicone oil;

Thinner: Silicone oil.

Release agent: EC release wax

Tensile breaking stress: 4.7 N / mm²

Elongation at break: about 430%

The sticker can have a given thickness to be chosen according to its size, in order to respect: its resistance to the instrument 1 in adhesion by its own mass (horizontal, vertical and upside down), its resistance to stretching, its respect for acoustics while keeping a thickness for the creation of relief and textures, its finesse for aesthetics, practicality for the game, and stretching to suit all surfaces 2 curves.

Below are typical thicknesses, to be distributed over an unlimited number of size scales:

- Small size:

3 cm x 5 cm = thickness from 1.0 mm to + or –100 µm

- Medium size:

9 cm x 15 cm = thickness from 1.1 mm to + or –100 µm

- Big size:

20 cm x 32 cm = thickness from 1.2 mm to + or –200 µm

The preferred thickness is between 1 and 1.5 mm with regularity of thickness.

Sticker 3, in particular in silicone, can be made with or without dye with a working time of up to 20 minutes. The sticker obtained can be transparent, monochrome, multi-color (which can be in gradation or by clear color transition), fluorescent, phosphorescent, glitter, covered with surface materials (eg powder, foam and textile), fixed or encapsulated during polymerization or a combination of several of these visual aspects.

Encapsulation allows materials to be trapped in depth, in particular through their porous and clinging fibers and surfaces.

Thus, it is possible to provide additional inserts in the stickers and provide therein, for example, a mark, an image, a logo, etc., by creating a shape and color in silicone. This is, for example, encapsulation or negative printing.

Encapsulation can be done by printing (silicone or other material) in a cavity or directly on the flat surface of the sticker, then pouring the silicone over it closing it on the periphery and its surface. This type of encapsulation can be illustrated by Figure 6C. The finished product is preferably not sensitive to the touch.

Negative printing can be done by molding made during casting. This can be illustrated by Figure 8C.

In addition, the exterior / sensory aspect of the sticker obtained may have a glossy surface, mat surface, positive relief (s), negative relief (s), with empty areas, textures, or a combination of several of these aspects.

Advantageously, the desired viscosity, corresponding to a hardness (shore A) of approximately 33 shA, offers sufficient crushing power for daily and normal use of the sticker. This flexibility is sought after for its high adhesive and stretchable side. A range between 10 and 60shA, preferably between 30 and 35 can be used.

The preferred tensile strength (approximately 4.7 N / mm²) provides sufficient tensile strength for daily and normal use of the sticker for its application. In use, this limits the deterioration of the materials because no cracks in the material must be present so as not to generate its prolongation of tearing by traction. A range between 2 and 8 N / mm² can be used.

The preferred elongation at break of approximately 430% is ideal for overlaying all complex shapes of an instrument 1 to ensure adhesion. The rate may change depending on the thickness of the finished product and any additives added. An elongation of 100 to 800% can be used.

Preferably, a silicone allowing very high precision to reproduce the very fine details is chosen.

Also, the silicone chosen has a high stability, both dimensional and to aging over time.

In addition, silicone does not emit harmful particles on contact, or in volatile form.

The peel-off of the sticker according to the invention, in particular silicone-based, is carried out without leaving any visible trace (trace or deposit of glue, stain, deposit of fat, peeling off varnish, etc.) on the substrate to which it adheres . The removal is rapid (thanks to a desired adhesive rupture ratio) without force and imposed peel angle and without damage to the surface. It induces respect for the varnish or lacquering of instrument 1 and also of the instrument itself.

The sticker according to the invention, in particular based on silicone, is stretchable for adaptation to any form of instrument 1 (on corrugated, curved surface 2), and stretchable and keeping the stretched position by simple contact with a pressure of the sticker on the receiving surface by its viscoelastic particularity.

Said sticker is non-deformable after stretching, returns to its original shape after use, this even when peeling off from the technical surface 2 with or without an object. In addition, this dimensionality is valid for any small part or element of small thickness to the entire sticker.

In addition, the sticker according to the invention, in particular based on silicone, is protective, namely shock-absorbing (cushioning), and protects against perspiration, light / radiation, dust. It is heat resistant and does not retain dust significantly.

In addition, said sticker does not (or slightly) affect the sound of Instrument 1 (small non-audible acoustic attenuation) by the desired finesse and creates a warmer, round and muffled sound.

It retains the aesthetics of reliefs, chamfers, angles and other textures (textures: mat, smooth, etc.), colors (strong, clear colors) and precise color transitions, and a very good old age over time. It does not rub off.

Furthermore, the sticker according to the invention, in particular based on silicone, adheres even to the constraints of sound vibration and movement movements of the musician or instrument 1. It can remain indefinitely in the desired location. on the instrument and also when storing the instrument in its case or bag.

It has not deteriorated in poor storage, in terms of the risk of kinking and deformation.

Alternatively or in combination, the elastomer layer can also comprise at least one elastomer chosen from another RTV silicone such as those for skin / or in food…; silicone paste; an alginate; natural or synthetic rubber; natural or synthetic latex; neoprene; polyurethane; nitrile; EPDM; Butyl (Polyisobutylene); mastic, chlorosulfonated polyethylene (CSM) or HypalonTM (trademark of DuPont); parablond; fluorocarbon rubber or FKM (VitonTM); or all silicon compounds (chemical compounds that contain silicon such as silicones and others ...). Of course, the layer may include a technically feasible copolymer of one or more of the elastomers listed herein.

The other variations of elastomers involve some or all of the advantages presented herein.

According to a variant, the sticker 3 comprises an association of several contiguous structures 4a-4d. This variant is made by means of one or the other manufacturing method described in the present invention. Advantageously, this makes it possible to produce stickers with different juxtaposed structures in order to have associated aesthetic effects. The material is preferably homogeneous in order to be able to bond the different structures, for example RTV silicone. This sticker 3 can be illustrated by Figure 3C.

According to one variant, the sticker comprises a complex three-dimensional configuration, in particular by reliefs and / or associated textures. Advantageously, this makes it possible to produce stickers with complex structures in terms of reliefs, curves or shapes for more aesthetics. This sticker is implemented as before with different reliefs / textures on different molds 5b, 5c or mold parts 6, or by negative printing. The relief obtained can be illustrated by FIG. 8C.

The molds offer the possibility of applying relief elements to the bottom of the mold (technique and embodiment III detailed below) to make stickers in this way. Any "standard" mold may have the option of a relief or a texture by the affixing in the background of an additional element playing on the relief and the final aesthetic graphics. All mono-color casting solutions (mode): mode I (figure 8C and detail 3b) or multi-texture: mode III (figure 3Dstickers in the center and on the right, and figure 3C) are valid for positive textures or reliefs and negatives. The difficulty of the reliefs and choosing the average thickness for the sticker (between the thinnest and thickest layers of the sticker). N.B .: mode II, multi-color (figure 3D stickers on the left) can be modified if we add a relief in the background, so it will be transformed into mode III and embodiment II will no longer be used.

The invention further relates to a method of manufacturing a particular sticker 3. It is more particularly a process for manufacturing a sticker 3 as described above.

The method according to the invention comprises a step of preparing at least one elastomer composition. The elastomer composition is in particular one of the compositions as described above.

The method further comprises a step of applying the elastomer composition to an adhesive-forming support, for example made of glass, stainless steel, resin, etc.

According to the invention, the application of the elastomer composition is made by pressing and / or doctoring 8 on at least one sticker mold 5b, 5c, 6 surrounding said elastomer composition. The squeegee application of a squeegee is known per se. The invention provides new molds.

The invention also relates to a use of a sticker according to the invention as a visual aid for musical learning.

For example, we can provide stickers including note identifications, note names, chords, nuances… or combinations of these. The invention proposes to achieve a removable marking that does not damage the technical surface.

In the case of using the instrument, it is preferable not to have a sticker in a place where the user plays the instrument, for example where the user touches the key several times. piano. This makes it possible to avoid the removal of the sticker during the game and any "stopping" of the finger (by membership).

For example, during practice, the pose should be on the top of the keys, towards the piano and not towards the musician, in order to give free rein to the fingering games.

Making the sticker mold:

A-Mold base

The base can be smooth or mat, textured, or with a relief depending on the finished product chosen. A material like glass is very effective in having the desired grip and the glossy finish. In addition, the glass plate offers the visualization of air bubbles on the underside by transparency.

The lower part of the mold will be the visible part of the sticker.

However, a sticker with a smooth (non-mat) surface 2 on the visible side will have the particularity of being reversible and can be positioned on both sides on instrument 1.

B-Contour of the mold

The mold 5b, 5c is for example made by a 3D printer (or other PVC or metal profile injection machine). The mold constitutes the peripheral rim serving as a container for the finished product for the casting of the sticker 3.

A mold postproduction step can be done by sanding over physical flaws during creation.

The part of the mold (in relief) obtained can be glued or welded (depending on the material) to the support here in glass.

Some parts may have insulated internal walls (such as islands) to create voids in the finished product or, for the insertion of a different finish color or texture (performed later). The mold for the sticker in Figure 5 includes an island to form the eye 7.

Note: a mold formed in one go can also be made, comprising both the base and the outline. For this, before its realization, the expected finishes must be determined. Thus the molding materials and the type of casting / injection / bending… will be chosen according to the expected finish.

C-Finishing the mold

The mold is preferably extremely flat in order to have the particular feature of allowing the casting rule 8 to pass. Thus, the silicone is spread uniformly, smoothly and over the same thickness. Casting and equalization can be done manually or robotically.

D- Silicone casting

1st embodiment:

The first embodiment is similar to a one-shot casting with a finished product of the mono-finish / texture or mono-color type.

In a first preferred embodiment, a board 5a (format / type of product a)) having several mold parts 6, is used. In other words, it is a set of several molds 6 joined together to make a large sticker. This embodiment can be illustrated by Figures 2A and 2B.

In essence, the first embodiment makes it possible to obtain a mono-color or mono-texture structure with or without parts 6, 7. It is made by direct casting.

FIG. 2A illustrates a sheet of A4 format (format / type of product a)) comprising a set of molds 6 joined together. The shaping of the sticker is poured in one go on this mold composed of a base and 6 multi-islands which will provide voids when removing the finished board. The resulting sticker can be applied to a guitar such as the one shown in Figure 2B.

Still with the 1st manufacturing / production method, the production of product type formats b) follows the same method. See the stickers: 4, 5,6A, 7A, 7B, 7C, 8A.

2nd embodiment:

In a second preferred embodiment, several molds 5b, 5c are used. This embodiment can be illustrated by Figures 3A to 3C.

In essence, the second embodiment achieves a multi-color structure. It is made by pouring in two stages, or even more. Fig. : 3D sticker on the left.

In all cases, said mold is preferably 0.7 to 2 mm thick, more preferably 1 to 1.5 mm thick to have a desired sticker thickness.

To make a sticker with a minimum of 2 different colors, an elastomer composition of a first color must be poured (mold of Figure 3A for example), then dried.

The first part of the sticker thus obtained is placed at least partially in a second mold, for example in the mold of FIG. 3B.

The second casting will be in the second mold, here larger than the first so that the new silicone freezes around the first product already on hold.

The fixing will therefore be successful.

For a third color, this method can be duplicated and so on.

3rd embodiment:

In a third preferred embodiment, to produce a sticker with a minimum of 2 different finishes, for example: mat and smooth or, in relief and smooth, the method is the same as the second. We can speak of a third embodiment during the application of texture thanks to the reliefs and / or textures at the bottom of the mold. In essence, the third embodiment achieves a multi-texture structure. Advantageously, this makes it possible to produce a sticker combining several complex structures. It is made by pouring in two stages, or even more. In particular, the smooth layer is poured first.

For a finish with at least a second surface other than smooth, the smooth surfaces of a design must be done first. This is because of the lack of adhesion of the non-smooth finished product against its production mold.

This method makes it possible to avoid during the pouring of the second part of the product (part of the non-smooth surface), lifting of the first part of the product. The principle of making the smooth part first, offers the use of its adhesion characteristic as a means of attachment to the base of the mold (made of glass) and thus prevents infiltration of the silicone from the second casting downwards. Thus the casting of the non-smooth zone (s) can (can) be done on the defined surface (them) relating to and bonded (s) to the smooth product (zone) currently in place.

This technique can be applied with or without different colors.

This technique is preferably not applied for stickers in mode 1: mono-finishes (fully matt or with fully positive or negative relief), because the latter can be poured all at once and therefore without risk of lifting.

As can be seen in figure 3D, the smooth texture shown on the left of the figure (mode I) differs from the 3D texture of the middle figure which includes a negative + smooth relief. Likewise, these figures differ from the figure on the right which includes a matte + smooth texture.

A variant is possible for the non-smooth multi-texture surfaces of the sticker. For this, the mold must be composed of a surface of texture x (not smooth) and adjacent to a minimum of texture y (smooth or not smooth) with a one-step casting. Thus the result will be a sticker with one or more preferably non-smooth textures on its finished surface and having the possibility of being composed of adjacent non-smooth textures.

Claims (10)

Method for reconfiguring a musical instrument (1), comprising a step of applying a sticker (3) on at least one technical surface (2) of the musical instrument (1), the sticker (3) comprising an elastomer layer configured to come into contact with said technical surface (2) and to adhere to it in a reversible manner without the application of glue,
characterized in that the application is made without glue, so that the elastomer layer comes into contact with said technical surface (2) and adheres thereto reversibly without application of glue. Method according to the preceding claim, characterized by a stretching step during the placement of the sticker. Method according to one of the preceding claims, characterized by a cutting step before or after the application of the sticker. Sticker (3) for reconfiguring a musical instrument (1), characterized in that it comprises an elastomer layer configured to come into contact with at least one technical surface (2) of the musical instrument (1), and reversibly adhere to it without applying glue Sticker (3) according to the preceding claim, characterized in that the elastomer layer comprises at least one elastomer chosen from silicone, an alginate; natural or synthetic rubber; natural or synthetic latex; neoprene; polyurethane; nitrile; EPDM; Butyl (Polyisobutylene); mastic, chlorosulfonated polyethylene; parablond; fluorocarbon rubber. Sticker (3) according to the preceding claim, characterized in that the elastomer layer comprises RTV Polyaddition silicone. Sticker (3) according to one of claims 4 to 6, characterized in that it comprises an association of several adjoining structures. Sticker (3) according to one of claims 4 to 7, characterized in that it comprises a complex three-dimensional configuration, in particular by reliefs and / or associated textures A method of manufacturing a sticker (3) according to one of claims 4 to 8, comprising the steps of: - preparing at least one elastomer composition; - apply the composition to a sticker forming medium; characterized in that the application is made by pressure and / or doctor blade (8) on at least one sticker mold (5b, 5c; 6) surrounding said elastomer composition. Method according to the preceding claim, characterized in that several structures are produced by means of one or more elastomeric compositions, applied by means of one or more sticker molds (5b, 5c; 6).